In this week’s episode, the teachers realize it’s April 1, which means it’s April Fool’s Day. When the school’s resident prankster calls in sick, the teachers become subject to an onslaught of pranks ...

As we celebrate the most mischievous day of the year, we are looking back at the brilliant television comedies and animated classics that elevated the art of the prank to absolute, hilarious heights.

The prank that launched everything is also the simplest one Adult Swim ever pulled, and its modesty is precisely what makes it worth acknowledging. On April 1, 2004, the network aired its regular ...